225
NOUS41 KILN 291436
PNSILN
KYZ093-291645-

Public Information Statement
National Weather Service Wilmington OH
1036 AM EDT Thu Aug 29 2024

...A MICROBURST WITH STRAIGHT-LINE WIND DAMAGE HAS BEEN CONFIRMED
NEAR ALEXANDRIA IN CAMPBELL COUNTY, KENTUCKY...

The National Weather Service in Wilmington, Ohio has determined
that a microburst occurred near Alexandria in Campbell County,
Kentucky during the late afternoon of August 28, 2024. Based on
radar information, the microburst occurred at approximately 5:39
PM EDT.

An analysis of KILN (Wilmington, Ohio) radar data, and even more
importantly the TCVG FAA Terminal Doppler Weather Radar (TDWR)
near Walton, Kentucky both depict an outflow-dominant
thunderstorm that was lacking the inflow, convergence, and
rotation necessary for tornado development. Instead, both radars
show a rapid increase of divergent surface winds near Alexandria
that are seen with thunderstorms producing downburst winds. In
particular, the FAA TDWR shows a brief but rapid enhancement of
divergent surface winds near the AA Highway, Backus Road, and
Viewpoint Drive, adding confidence of an enhanced microburst at
this location within a longer period of more moderate downburst
thunderstorm winds.

With a lack of wind shear, as was the case in this event, the
thunderstorm updraft tends to "suffocate" and collapses back upon
itself leading to a microburst. The mass of rain and cold air at
the top of the updraft collapse downward, gaining velocity as it
does so. In addition, the environment across northern Kentucky on
Wednesday afternoon was an optimal environment for localized
microbursts, void of the low and deep layer wind shear needed for
tornado development.

Wind damage was reported along Backus Drive and the AA Highway
near Alexandria. Along Backus Drive, several trees were knocked
down and some of the trees were reported to have fallen on some
of the homes. Several trees were also knocked down along the AA
Highway. The National Weather Service received and evaluated
photos of the damage on Backus Drive. Based on the damage, winds
associated with this microburst were estimated to be 60-70 mph.

The National Weather Service would like to thank Campbell County,
Kentucky Emergency Management for their coordination and
assistance with this determination.

$$
BPP/Binau